06/04/2010 11:08 am ET Updated May 25, 2011

Beck, Limbaugh, Franken, Gingrich: Political Bestsellers Bring On An Age Of Name-Calling

The contents of these books are just as confrontational as their titles, and while President Obama might have lamented the "coarsening of our political dialogue" during a "60 Minutes" interview last year, experts say the tough language and name-calling falls directly in the arc of American political tradition.

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